Constellation Energy Corporation
US ˙ NasdaqGS ˙ US21037T1097

SecurityCEG / Constellation Energy Corporation
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership408,686 shares
Latest Disclosed Value $ 114,125,565
Citadel Advisors Llc ownership in CEG / Constellation Energy Corporation

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 408,686 shares of Constellation Energy Corporation (US:CEG) valued at $114,125,566 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 278,533 shares of Constellation Energy Corporation. This represents a change in shares of 46.73% during the quarter. The current value of the position is $104,145,453 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (CEG) in the form of stock options. The firm currently holds call options representing 999,500 of underlying shares valued at $279,110,375 USD and put options representing 1,344,300 of underlying shares valued at $375,395,775 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CEG / Constellation Energy Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CONSTELLATION ENERGY COM 21037T109 408,686 130,153 46.73 114,126 15.98 0.0162
2026-02-17 2025-12-31 13F CONSTELLATION ENERGY COM 21037T109 278,533 180,726 184.78 98,397 205.72 0.0148
2025-11-14 2025-09-30 13F CONSTELLATION ENERGY COM 21037T109 97,807 41,142 72.61 32,185 75.98 0.0049
2025-08-14 2025-06-30 13F CONSTELLATION ENERGY COM 21037T109 56,665 -299,653 -84.10 18,289 -74.54 0.0032
2025-05-15 2025-03-31 13F CONSTELLATION ENERGY COM 21037T109 356,318 58,438 19.62 71,844 7.81 0.0136
2025-02-14 2024-12-31 13F CONSTELLATION ENERGY COM 21037T109 297,880 42,347 16.57 66,639 0.29 0.0115
2024-11-14 2024-09-30 13F CONSTELLATION ENERGY COM 21037T109 255,533 -84,195 -24.78 66,444 -2.34 0.0128
2024-08-14 2024-06-30 13F CONSTELLATION ENERGY COM 21037T109 339,728 195,918 136.23 68,037 155.94 0.0138
2024-05-15 2024-03-31 13F CONSTELLATION ENERGY COM 21037T109 143,810 -81,211 -36.09 26,583 1.07 0.0051
2024-02-14 2023-12-31 13F CONSTELLATION ENERGY COM 21037T109 225,021 163,592 266.31 26,303 292.57 0.0053
2023-11-14 2023-09-30 13F CONSTELLATION ENERGY COM 21037T109 61,429 13,746 28.83 6,701 53.49 0.0014
2023-08-14 2023-06-30 13F CONSTELLATION ENERGY COM 21037T109 47,683 -1,306,536 -96.48 4,365 -95.89 0.0009
2023-05-15 2023-03-31 13F CONSTELLATION ENERGY COM 21037T109 1,354,219 1,224,050 940.35 106,306 847.38 0.0234
2023-02-14 2022-12-31 13F CONSTELLATION ENERGY COM 21037T109 130,169 -444,372 -77.34 11,222 -76.52 0.0026
2022-11-14 2022-09-30 13F CONSTELLATION ENERGY COM 21037T109 574,541 -153,935 -21.13 47,796 14.58 0.0109
2022-08-15 2022-06-30 13F CONSTELLATION ENERGY COM 21037T109 728,476 -593,654 -44.90 41,713 -43.91 0.0107
2022-05-16 2022-03-31 13F CONSTELLATION ENERGY COM 21037T109 1,322,130 1,322,130 74,370 0.0154
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F CONSTELLATION ENERGY COM Call 999,500 9.19 279,110 -13.69 n/a n/a n/a
2026-02-17 2025-12-31 13F CONSTELLATION ENERGY COM Call 915,400 27.03 323,383 36.38 n/a n/a n/a
2025-11-14 2025-09-30 13F CONSTELLATION ENERGY COM Call 720,600 -10.35 237,128 -8.60 n/a n/a n/a
2025-08-14 2025-06-30 13F CONSTELLATION ENERGY COM Call 803,800 -20.96 259,434 26.53 n/a n/a n/a
2025-05-15 2025-03-31 13F CONSTELLATION ENERGY COM Call 1,016,900 9.52 205,038 -1.29 n/a n/a n/a
2025-02-14 2024-12-31 13F CONSTELLATION ENERGY COM Call 928,500 36.91 207,715 17.79 n/a n/a n/a
2024-11-14 2024-09-30 13F CONSTELLATION ENERGY COM Call 678,200 36.05 176,346 76.64 n/a n/a n/a
2024-08-14 2024-06-30 13F CONSTELLATION ENERGY COM Call 498,500 40.86 99,835 52.61 n/a n/a n/a
2024-05-15 2024-03-31 13F CONSTELLATION ENERGY COM Call 353,900 196.01 65,418 368.11 n/a n/a n/a
2024-02-14 2023-12-31 13F CONSTELLATION ENERGY COM Call 119,557 -18.66 13,975 -12.84 n/a n/a n/a
2023-11-14 2023-09-30 13F CONSTELLATION ENERGY COM Call 146,989 1.54 16,034 20.99 n/a n/a n/a
2023-08-14 2023-06-30 13F CONSTELLATION ENERGY COM Call 144,762 -65.19 13,253 -59.41 n/a n/a n/a
2023-05-15 2023-03-31 13F CONSTELLATION ENERGY COM Call 415,870 61.05 32,646 46.65 n/a n/a n/a
2023-02-14 2022-12-31 13F CONSTELLATION ENERGY COM Call 258,218 -27.51 22,261 -24.88 n/a n/a n/a
2022-11-14 2022-09-30 13F CONSTELLATION ENERGY COM Call 356,194 160.74 29,632 278.83 n/a n/a n/a
2022-08-15 2022-06-30 13F CONSTELLATION ENERGY COM Call 136,611 -71.88 7,822 -71.38 n/a n/a n/a
2022-05-16 2022-03-31 13F CONSTELLATION ENERGY COM Call 485,802 27,326 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F CONSTELLATION ENERGY COM Put 1,344,300 6.64 375,396 -15.70 n/a n/a n/a
2026-02-17 2025-12-31 13F CONSTELLATION ENERGY COM Put 1,260,600 11.57 445,332 19.77 n/a n/a n/a
2025-11-14 2025-09-30 13F CONSTELLATION ENERGY COM Put 1,129,900 -13.02 371,816 -11.32 n/a n/a n/a
2025-08-14 2025-06-30 13F CONSTELLATION ENERGY COM Put 1,299,100 4.13 419,298 66.68 n/a n/a n/a
2025-05-15 2025-03-31 13F CONSTELLATION ENERGY COM Put 1,247,600 -7.28 251,554 -16.43 n/a n/a n/a
2025-02-14 2024-12-31 13F CONSTELLATION ENERGY COM Put 1,345,500 29.64 301,002 11.53 n/a n/a n/a
2024-11-14 2024-09-30 13F CONSTELLATION ENERGY COM Put 1,037,900 64.62 269,875 113.73 n/a n/a n/a
2024-08-14 2024-06-30 13F CONSTELLATION ENERGY COM Put 630,500 24.93 126,270 35.35 n/a n/a n/a
2024-05-15 2024-03-31 13F CONSTELLATION ENERGY COM Put 504,700 445.25 93,294 762.31 n/a n/a n/a
2024-02-14 2023-12-31 13F CONSTELLATION ENERGY COM Put 92,563 -51.35 10,820 -47.87 n/a n/a n/a
2023-11-14 2023-09-30 13F CONSTELLATION ENERGY COM Put 190,263 -30.93 20,754 -17.71 n/a n/a n/a
2023-08-14 2023-06-30 13F CONSTELLATION ENERGY COM Put 275,463 -43.37 25,219 -33.96 n/a n/a n/a
2023-05-15 2023-03-31 13F CONSTELLATION ENERGY COM Put 486,463 490.65 38,187 437.85 n/a n/a n/a
2023-02-14 2022-12-31 13F CONSTELLATION ENERGY COM Put 82,360 -71.35 7,100 -70.31 n/a n/a n/a
2022-11-14 2022-09-30 13F CONSTELLATION ENERGY COM Put 287,429 463.94 23,911 719.43 n/a n/a n/a
2022-08-15 2022-06-30 13F CONSTELLATION ENERGY COM Put 50,968 -83.29 2,918 -82.99 n/a n/a n/a
2022-05-16 2022-03-31 13F CONSTELLATION ENERGY COM Put 304,984 17,155 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.